Hi YongSan,
I tested to connect to your server on port 25.
It takes about 2-3 min to get the greeting-banner ("220 localhost.localdomain
- Welcome to Qmail Toaster Ver. 1.3 SMTP Server ESMTP")
For me that looks like your server takes ages to resolve my senders reverse
dns.
Did you configure the forwarders on your caching dns server on localhost?
How long does it take to resolve f.ex. 122.175.72.62 ?
Some times ago I had the same behaviour on a clients qmail-box where the
config. of bind disallowed querys from localhost (127.0.0.1).
Andreas
Am Montag, 12. Juli 2010 05:29:44 schrieb Poh Yong Hwang:
> Hi,
>
> It should not be my windows as i have ask many people to try(around 10) and
> all face the same issue with slowness in smtp. I have remove the default
> zen.spamhaues on the blacklist file and it is still slow..
>
> YongSan
>
> On Mon, Jul 12, 2010 at 11:06 AM, South Computers
>
> <i...@southcomputers.com>wrote:
> > For a quick test to see if it's your dns at the windoze box, try adding
> > your toaster to the hosts file. Typically win boxes check the hosts file
> > before dns.
> >
> > Also, check the blacklists on your toaster. You may have a slow dnsbl in
> > there.
> >
> > Poh Yong Hwang wrote:
> >> Hi,
> >>
> >> Here is my resolv.conf :
> >>
> >> search mail.popular.com.sg <http://mail.popular.com.sg>
> >>
> >> nameserver 127.0.0.1
> >> nameserver 165.21.83.88
> >> nameserver 165.21.100.88
> >>
> >> The slowness occurs on the time that the message took to leave Outlook
> >> outbound queue. If we do a email dossier check at centralops.net <
> >> http://centralops.net>, it always get timeout while connecting to our
> >> mail server. One of the domain i have in this mail server is
> >> mail.popular.com.sg <http://mail.popular.com.sg>
> >>
> >> Please advise.
> >>
> >> Thanks
> >>
> >> YongSan
> >>
> >>
> >> On Mon, Jul 12, 2010 at 3:54 AM, Eric Shubert <e...@shubes.net <mailto:
> >> e...@shubes.net>> wrote:
> >>
> >> DNS is often the culprit with sluggish performance, so Andreas is
> >> right.
> >>
> >> Outlook doesn't usually exhibit slowness. Because it has its own
> >> Outbound queue, it appears to the user that the message has been
> >> sent before the submission/smtp server is even contacted.
> >>
> >> I'd like to know where you're seeing the slowness. Are you
> >> counting the time it takes for the message to reach its
> >> destination? The time it takes to leave Outlook's Outbound queue?
> >>
> >> What messages are you seeing in the send queue that correspond to
> >> the slow message(s)?
> >> # qmlog send
> >> It's possible that the message is being requeued due to
> >> graylisting by the recipient's server.
> >>
> >> There are many possibilities.
> >>
> >> -- -Eric 'shubes'
> >>
> >>
> >> Andreas Galatis wrote:
> >>
> >> Hi Yongsan,
> >>
> >> I think 1st thing to lookup is dns-lookup speed of your server.
> >> Do you have a cahing-nameserver installed? What are your
> >> settings in resolve.conf?
> >>
> >> How is your connection to the internet (static, dynamic ip)
> >>
> >> Bye
> >>
> >> Andreas
> >> Am Sonntag, 11. Juli 2010 13:32:36
> >> schrieb Poh Yong Hwang:
> >>
> >> Hi all,
> >>
> >> I have setup qmailtoaster and have an issue with sending
> >> out emails.
> >> Whenever I tried to send out emails, it gets very slow.
> >> Takes around 5
> >> mins to send out an email using outlook.
> >>
> >> Please advise how should I troubleshoot this.
> >>
> >> Thanks.
> >> Yongsan
> >>
> >>
> >>
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If you need professional help with your setup, contact them today!
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